Add Accurate Subtitles to your Videos

Add accurate subtitles to your videos and save hours of work. Upload your videos and edit right on your browser. Translate your subtitle into another language with a single click. Get subtitle file for your YouTube video or download the video with subtitles added.

Powered by Whisper but Optimized for Video Subtitles

• Focused on Accuracy. We don't cut corners when we transcribe your videos, we use the highest quality AI model to make sure the transcription is as accurate as possible. This saves you time and money in your content creation process.
• Precise Timestamps. Not every AI transcription tool gives you timestamps precise enough for videos. We add extra processing to align the timestamps so you don't have to spend too much time tweaking them. We also provide word-level timestamps for more fine-grained controls.
• Smooth Subtitle Editing Experience. Captioner is built by content creators, for content creators. We spent hours perfecting the editing experience so you can spend more time on your content and less time on the tools.
• Import and Align Existing Transcripts. You might already have a transcript written for your video. No problem! You can import it directly into Captioner and we will align it for you. (Think YouTube's auto-sync feature, but better!)
• Subtitle File Export. Different platforms and editing softwares use different subtitle file formats. We support the most popular formats (SBV, SRT, VTT) so you can add quickly add subtitles into your YouTube videos. You can also choose a font style directly from the editor and get a video export with the subtitles burned in.

"I haven't found an AI transcription software that is not only accurate but also affordable until I came across Captioner. It's a game changer for our channel."

🚀 FastMoss: Core Functional Modules Overview

FastMoss is an advanced data intelligence platform designed for TikTok Shop analytics, product research, and e-commerce growth. It provides powerful tools to help sellers, agencies, and brands make data-driven decisions.

📊 1. Product Analytics

FastMoss offers deep insights into trending products across TikTok Shop.

Discover winning products in real time Analyze sales volume, GMV, and growth trends Track product lifecycle and demand patterns

👉 Perfect for product research and market validation.

🎥 2. Creator & Influencer Analysis

Identify top-performing creators and influencers in your niche.

View influencer sales performance and engagement Analyze content effectiveness and conversion rates Find the best creators for collaboration

👉 Ideal for influencer marketing and affiliate strategies.

🛍️ 3. Shop Intelligence

Monitor competitor shops and benchmark performance.

Track shop sales, product listings, and rankings Analyze store growth trends Identify top competitors and market leaders

👉 Helps optimize your store strategy and positioning.

📈 4. Trend & Market Insights

Stay ahead of the market with real-time trend tracking.

Discover emerging niches and viral trends Monitor category performance Analyze regional market dynamics

👉 Essential for scaling and entering new markets.

🔍 5. Ad & Content Tracking

Analyze high-performing ads and viral content.

Track TikTok ads performance Identify winning creatives Learn from top-converting videos

👉 Boost your ad ROI and creative strategy.

⚙️ 6. Data Export & API Integration

FastMoss supports flexible data access for advanced users.

Export data for reporting and analysis Integrate with internal systems via API Automate workflows and pipelines

👉 Suitable for teams, agencies, and data-driven operations.

🌍 7. Multi-Region Support

Analyze TikTok Shop data across different regions.